题目

阅读理解 Sleep Struggle One in every five young people has a sleep problem, so you're not alone. Getting enough sleep has become as important as eating vegetables and exercising regularly. It's very important for your body. Most young people only get seven hours of sleep each night, when they actually need nine hours. And making up for lost sleep during the week by sleeping on weekends doesn't really work. In fact, sleeping late on weekends may actually do you more harm than good, if you have sleep problems. What happens if you don't get enough sleep? If your sleep problem continues fo用根小棒可以摆成一个正方形。